Face mask



FIG. 1 is a side elevational view of a face mask showing our new design, the opposite side being a mirror image of that shown;

FIG. 2 is a right end elevational view thereof;

FIG. 3 is a left end elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a face mask, as shown and described. 